20112641 has 2 divisors, whose sum is σ = 20112642. Its totient is φ = 20112640.

The previous prime is 20112637. The next prime is 20112661. The reversal of 20112641 is 14621102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 2262016 = 4225^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112641 - 2² = 20112637 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056320 + 10056321.

It is an arithmetic number, because the mean of its divisors is an integer number (10056321).

Almost surely, 2^20112641 is an apocalyptic number.

It is an amenable number.

20112641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112641 is an equidigital number, since it uses as much as digits as its factorization.

20112641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20112641 is about 4484.7119193991. The cubic root of 20112641 is about 271.9503991519.

Adding to 20112641 its reverse (14621102), we get a palindrome (34733743).

The spelling of 20112641 in words is "twenty million, one hundred twelve thousand, six hundred forty-one".